Quarter	Percentage of GDP
1990-10-01	50.4
1991-01-01	51.3
1991-04-01	50.4
1991-07-01	50.0
1991-10-01	50.9
1992-01-01	51.4
1992-04-01	51.6
1992-07-01	52.3
1992-10-01	52.5
1993-01-01	53.9
1993-04-01	53.7
1993-07-01	53.6
1993-10-01	55.2
1994-01-01	57.0
1994-04-01	57.7
1994-07-01	57.8
1994-10-01	58.6
1995-01-01	59.5
1995-04-01	61.1
1995-07-01	60.9
1995-10-01	61.3
1996-01-01	63.1
1996-04-01	64.4
1996-07-01	65.3
1996-10-01	66.5
1997-01-01	70.6
1997-04-01	73.4
1997-07-01	75.3
1997-10-01	72.0
1998-01-01	75.0
1998-04-01	75.7
1998-07-01	77.6
1998-10-01	78.3
1999-01-01	80.3
1999-04-01	81.9
1999-07-01	83.5
1999-10-01	84.6
2000-01-01	84.8
2000-04-01	85.8
2000-07-01	87.0
2000-10-01	87.5
2001-01-01	87.3
2001-04-01	87.7
2001-07-01	88.3
2001-10-01	89.2
2002-01-01	89.8
2002-04-01	91.1
2002-07-01	92.5
2002-10-01	93.8
2003-01-01	95.0
2003-04-01	96.7
2003-07-01	99.3
2003-10-01	100.9
2004-01-01	101.8
2004-04-01	102.6
2004-07-01	103.8
2004-10-01	104.2
2005-01-01	105.1
2005-04-01	105.8
2005-07-01	107.1
2005-10-01	107.9
2006-01-01	107.8
2006-04-01	108.5
2006-07-01	108.7
2006-10-01	109.4
2007-01-01	109.9
2007-04-01	110.0
2007-07-01	110.3
2007-10-01	109.6
2008-01-01	109.2
2008-04-01	109.4
2008-07-01	109.6
2008-10-01	110.5
2009-01-01	111.9
2009-04-01	114.1
2009-07-01	116.4
2009-10-01	118.4
2010-01-01	119.1
2010-04-01	119.4
2010-07-01	119.6
2010-10-01	119.2
2011-01-01	118.4
2011-04-01	118.6
2011-07-01	118.7
2011-10-01	118.7
2012-01-01	118.2
2012-04-01	118.4
2012-07-01	118.9
2012-10-01	118.6
2013-01-01	117.8
2013-04-01	117.0
2013-07-01	116.4
2013-10-01	115.0
2014-01-01	114.1
2014-04-01	113.7
2014-07-01	113.2
2014-10-01	112.5
2015-01-01	112.2
2015-04-01	111.4
2015-07-01	110.9
2015-10-01	110.5
2016-01-01	109.9
2016-04-01	109.8
2016-07-01	109.8
2016-10-01	108.6
2017-01-01	107.9
2017-04-01	107.1
2017-07-01	106.2
2017-10-01	105.5
2018-01-01	104.3